JPH06155171A - Electric discharge machine, electric discharge machining method and metal mold manufacturing method - Google Patents
Electric discharge machine, electric discharge machining method and metal mold manufacturing methodInfo
- Publication number
- JPH06155171A JPH06155171A JP30085492A JP30085492A JPH06155171A JP H06155171 A JPH06155171 A JP H06155171A JP 30085492 A JP30085492 A JP 30085492A JP 30085492 A JP30085492 A JP 30085492A JP H06155171 A JPH06155171 A JP H06155171A
- Authority
- JP
- Japan
- Prior art keywords
- male
- electric discharge
- female
- machining
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、放電加工装置、放電加
工方法及び金型製作方法に関するものであり、特に、金
型作成における切削加工後のカッターマークを除去でき
る放電加工装置、放電加工方法及び金型製作方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric discharge machining apparatus, an electric discharge machining method, and a die manufacturing method, and more particularly, to an electric discharge machining apparatus and an electric discharge machining method capable of removing a cutter mark after cutting in forming a die. And a method for producing a mold.
【０００２】[0002]
【従来の技術】図６は従来の金型製作方法の作業工程を
示す説明図であり、従来のダイスポッティングプレスの
金型作成の工程図である。図において、２２は切削加工
工程、２３はグラインダによるカッターマーク除去工
程、２４は修正工程であり、切削加工工程２２、カッタ
ーマーク除去工程２３、修正工程２４の順に作業工程が
進む。２５は切削加工が終了した雄型、２６は同じく切
削加工が終了した雌型であり、切削加工が終了した段階
であるので、雄型・雌型の切削面にはカッターマークが
各々付いている。２７，２８はカッターマークを除去し
た雄型・雌型であり、切削加工が終了した金型２５，２
６をグラインダによりカッターマークを除去したもので
ある。２９，３０はカッターマークを除去した雄型・雌
型２７，２８を修正した雄型・雌型２９，３０であり、
雄型・雌型が一対となってぴったりと密着するようにな
ったものである。2. Description of the Related Art FIG. 6 is an explanatory view showing working steps of a conventional die manufacturing method, and is a step diagram of die making of a conventional die spotting press. In the figure, 22 is a cutting process, 23 is a cutter mark removing process by a grinder, and 24 is a correcting process. The cutting process 22, the cutter mark removing process 23, and the correcting process 24 proceed in this order. 25 is a male die that has been cut, and 26 is a female die that has also been cut. At the stage where the cutting has been finished, the male and female cutting surfaces have cutter marks, respectively. . 27 and 28 are male and female molds from which the cutter marks have been removed.
6 has the cutter mark removed by a grinder. 29 and 30 are male and female molds 29 and 30 which are modified male and female molds 27 and 28 from which cutter marks are removed,
It is a male and female pair that comes into close contact with each other.
【０００３】従来はこのように、金型の雄型・雌型を別
途に切削加工によって加工した後、グラインダによりカ
ッターマークを除去し、その後、プレス機に取付けて、
雄型・雌型の間にベンガラを塗り、プレス機で押付け、
ベンガラのとれた部分を少しずつ削って修正し、雄型・
雌型がぴったりと密着する様になるまで修正を続けると
いう方法を採っていた。Conventionally, the male and female molds are separately machined by cutting as described above, the cutter marks are removed by a grinder, and then the mold is mounted on a press machine.
Apply red iron oxide between male and female molds and press with a press machine,
The part where the red iron oxide is taken is shaved little by little and corrected, and a male type
I used the method of continuing the correction until the female mold came into close contact.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記のような
従来の金型製作方法では、カッターマークを除去するた
めのグラインダ処理、及び、雄型・雌型の補正に極めて
多くの時間を必要としていた。However, in the conventional die manufacturing method as described above, much time is required for the grinder processing for removing the cutter marks and the male / female correction. I was there.
【０００５】また、通常の放電加工により雄型・雌型の
補正を行なうという試みもあるが、鉄対鉄の放電加工は
通常極めて不安定になりやすく、アークと呼ばれる異常
放電を引き起こし、金型として使いものにならなくなる
危険が大きかった。There have also been attempts to correct male / female dies by normal electrical discharge machining, but iron-to-iron electrical discharge machining usually tends to be extremely unstable, causing an abnormal discharge called an arc and causing a metal mold. There was a big risk that it would not be useful.
【０００６】そこで、本発明は、多くの時間を必要とし
た切削加工後のカッターマークの除去と、雄型・雌型の
修正とを放電加工を用いて簡単に、しかも失敗なくでき
る放電加工装置、放電加工方法及び金型製作方法の提供
を課題とするものである。In view of the above, the present invention provides an electric discharge machining apparatus capable of easily removing a cutter mark after cutting, which requires a lot of time, and correcting male and female dies by using electric discharge machining, and without failure. It is an object of the present invention to provide an electric discharge machining method and a die manufacturing method.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明にかかる
放電加工装置は、電極と被加工物とを加工液を介在させ
て対向させ、電極と被加工物間にパルス状の電圧を印加
して放電を発生せしめ、その放電エネルギーで放電加工
をする放電加工手段と、前記電極と被加工物間の電気的
な極性を放電回数に応じて交互に切換える極性切換手段
と、前記加工液内に混入された粉体とを具備するもので
ある。According to a first aspect of the present invention, there is provided an electric discharge machining apparatus in which an electrode and a workpiece are opposed to each other with a machining liquid interposed therebetween, and a pulsed voltage is applied between the electrode and the workpiece. To generate an electric discharge and perform electric discharge machining with the electric discharge energy, polarity switching means for alternately switching the electric polarity between the electrode and the workpiece according to the number of discharges, and inside the machining liquid. And a powder mixed in.
【０００８】請求項２の発明にかかる放電加工方法は、
電極と被加工物とを加工液を介在させて対向させ、電極
と被加工物間にパルス状の電圧を印加して放電を発生せ
しめ、その放電エネルギーで被加工物を加工する放電加
工において、前記電極と被加工物間の電気的な極性を放
電回数に応じて交互に切換え、前記加工液内に粉体を混
入し、前記電極及び被加工物に鉄を用いるものである。The electric discharge machining method according to the invention of claim 2 is
In the electric discharge machining in which the electrode and the work piece are opposed to each other with a machining liquid interposed therebetween, a pulsed voltage is applied between the electrode and the work piece to generate an electric discharge, and the work piece is processed by the electric discharge energy. The electrical polarity between the electrode and the workpiece is alternately switched according to the number of discharges, powder is mixed in the machining liquid, and iron is used for the electrode and the workpiece.
【０００９】請求項３の発明にかかる金型製作方法は、
金型の一対の雄型・雌型を切削加工する切削加工工程
と、前記切削加工後の雄型・雌型を粉体を混入した加工
液を介在させて対向させ、前記雄型・雌型間にパルス状
の電圧を印加して放電を発生せしめるとともに、前記雄
型・雌型間の電気的な極性を放電回数に応じて交互に切
換え、その放電エネルギーで前記雄型・雌型のカッター
マークの除去及び雄型・雌型の修正をする放電加工工程
とを具備するものである。A mold manufacturing method according to the invention of claim 3 is
A cutting process for cutting a pair of male / female molds and a male / female mold after the cutting are made to face each other with a machining fluid containing powder intervening between them. A pulsed voltage is applied between them to generate a discharge, and the electrical polarity between the male and female molds is alternately switched according to the number of discharges, and the discharge energy causes the male and female cutters. It is provided with an electric discharge machining step of removing the mark and correcting the male / female type.
【００１０】請求項４の発明にかかる金型製作方法は、
金型の一対の雄型・雌型データをＣＡＤ／ＣＡＭにより
作成するＣＡＤ／ＣＡＭ工程と、前記雄型・雌型データ
に基づき金型の雄型・雌型を切削加工する切削加工工程
と、前記切削加工後の雄型・雌型を粉体を混入した加工
液を介在させて対向させ、雄型・雌型間にパルス状の電
圧を印加して放電を発生せしめるとともに、雄型・雌型
間の電気的な極性を放電回数に応じて交互に切換え、そ
の放電エネルギーでカッターマークの除去及び雄型・雌
型の修正をする放電加工工程とを具備するものである。A die manufacturing method according to the invention of claim 4 is
A CAD / CAM process for creating a pair of male / female mold data of the mold by CAD / CAM; and a cutting process for cutting the male / female mold of the mold based on the male / female mold data. The male / female molds after the cutting process are opposed to each other with a machining liquid containing powder intervening therebetween, and a pulsed voltage is applied between the male / female molds to generate an electric discharge. An electrical discharge machining step is performed in which the electric polarity between the molds is alternately switched according to the number of discharges, and the discharge energy is used to remove the cutter marks and correct the male and female molds.
【００１１】[0011]
【作用】請求項１の発明の放電加工装置においては、電
極と被加工物とを加工液を介在させて対向させ、電極と
被加工物間にパルス状の電圧を印加して放電加工を行な
うときに、前記電極と被加工物間の電気的な極性を放電
回数に応じて交互に切換え、前記加工液内に粉体が混入
されたものであるから、電極と被加工物との加工間隙が
拡大し、不安定になり易かった放電加工を安定して行な
うことができ、しかも、電極と被加工物とを同じ割合で
加工でき、均一な加工ができる。In the electric discharge machining apparatus of the first aspect of the present invention, the electric discharge machining is performed by making the electrode and the workpiece face each other with the machining liquid interposed therebetween and applying a pulsed voltage between the electrode and the workpiece. At this time, the electric polarity between the electrode and the work piece is alternately switched according to the number of discharges, and the powder is mixed in the working liquid. Therefore, the machining gap between the electrode and the work piece is changed. It is possible to stably perform the electric discharge machining which was likely to become unstable and become unstable, and moreover, the electrode and the workpiece can be machined at the same ratio, and uniform machining can be performed.
【００１２】請求項２の発明の放電加工方法において
は、放電エネルギーで被加工物を加工する放電加工にお
いて、電極と被加工物間の電気的な極性を放電回数に応
じて交互に切換え、前記加工液内に粉体を混入し、前記
電極及び被加工物に鉄を用いるものであるから、電極と
被加工物との加工間隙が拡大し、通常極めて不安定にな
り易かった鉄対鉄の放電加工を安定して行なうことがで
き、しかも、電極と被加工物とを同じ割合で加工し、均
一に加工することができる。In the electric discharge machining method according to the second aspect of the present invention, in the electric discharge machining for machining the workpiece with the discharge energy, the electrical polarity between the electrode and the workpiece is alternately switched according to the number of discharges. Since iron is used for the electrode and the work piece by mixing a powder into the working fluid, the working gap between the electrode and the work piece is enlarged, and it is usually easy to become unstable. The electric discharge machining can be stably performed, and moreover, the electrode and the workpiece can be machined at the same ratio and uniformly machined.
【００１３】請求項３の発明の金型製作方法において
は、金型の一対の雄型・雌型を切削加工し、切削加工後
の雄型・雌型を粉体を混入した加工液を介在させて対向
させ、前記雄型・雌型間にパルス状の電圧を印加して放
電を発生せしめるとともに、前記雄型・雌型間の電気的
な極性を放電回数に応じて交互に切換え、その放電エネ
ルギーで前記雄型・雌型のカッターマークの除去及び雄
型・雌型の修正をするものであるから、切削加工後の雄
型・雌型のカッターマークの除去と、雄型・雌型の修正
を放電加工を利用して短時間にできる。In the die manufacturing method of the third aspect of the present invention, a pair of male and female dies of the die are cut, and the male and female dies after cutting are interspersed with a working fluid containing powder. And make them face each other to generate a discharge by applying a pulsed voltage between the male mold and the female mold, and alternately switch the electrical polarity between the male mold and the female mold according to the number of discharges. Since the male / female cutter marks are removed and the male / female mold is corrected by the discharge energy, the male / female cutter marks are removed after cutting, and the male / female molds are removed. Can be corrected in a short time by using electric discharge machining.
【００１４】請求項４の発明の金型製作方法において
は、金型の一対の雄型・雌型データをＣＡＤ／ＣＡＭに
より作成し、この雄型・雌型データに基づき金型の雄型
・雌型を切削加工し、切削加工後の雄型・雌型を粉体を
混入した加工液を介在させて対向させ、雄型・雌型間に
パルス状の電圧を印加して放電を発生せしめるととも
に、雄型・雌型間の電気的な極性を放電回数に応じて交
互に切換え、その放電エネルギーでカッターマークの除
去及び雄型・雌型の修正をするものであるから、従来複
雑であった雄型・雌型の金型の製作が簡単にできる。In the die manufacturing method according to the fourth aspect of the present invention, a pair of male / female die data of the die is created by CAD / CAM, and the male / female die of the die is produced based on the male / female die data. The female die is machined, and the male and female die after machining are made to face each other with a machining fluid containing powder intervening, and a pulsed voltage is applied between the male die and female die to generate electric discharge. At the same time, the electrical polarity between the male and female molds is switched alternately according to the number of discharges, and the discharge energy is used to remove the cutter marks and correct the male and female molds, which is conventionally complicated. Easy to make male / female molds.
【００１５】[0015]
【実施例】以下、本発明の各実施例について説明する。 〈第一実施例〉図１は本発明の第一実施例である放電加
工装置及び放電加工方法を示す説明図である。図におい
て、１は切削加工が終った段階の金型、２は切削加工が
終った段階の金型１と対称の雌型状の金型で、同様に切
削加工が終った段階の金型である。この場合、実際に必
要となる金型は一方（切削加工が終った段階の金型１）
のみの場合でも、両方（切削加工が終った段階の金型
１，２）ともに必要となる場合でもよい。３は粉体を混
入した適当な絶縁性を有する加工液であり、粉体として
は、シリコン粉末などが使用される。そして、切削加工
が終った段階の金型１，２をそれぞれ電極として放電加
工を行なう。４は放電加工の加工電源、５は加工槽であ
る。この切削加工が終った段階の金型１，２間には図２
のような電圧が印加される。図２は本発明の第一実施例
である放電加工装置及び放電加工方法による極間に印加
する電圧を示す波形図である。Embodiments of the present invention will be described below. <First Embodiment> FIG. 1 is an explanatory diagram showing an electric discharge machining apparatus and an electric discharge machining method according to a first embodiment of the present invention. In the figure, 1 is a mold at the stage where the cutting process is finished, 2 is a female mold that is symmetrical to the mold 1 at the stage when the cutting process is finished, and is similarly a mold at the stage when the cutting process is finished. is there. In this case, the mold that is actually needed is one (mold 1 at the stage when cutting is finished)
In either case, both (the molds 1 and 2 at the stage after the cutting process) are necessary. Reference numeral 3 is a working liquid having an appropriate insulating property in which powder is mixed, and silicon powder or the like is used as the powder. Then, electric discharge machining is performed by using the molds 1 and 2 at the stage where the cutting process is completed as electrodes. 4 is a machining power source for electric discharge machining, and 5 is a machining tank. Fig. 2 shows between the dies 1 and 2 when this cutting process is completed.
Voltage is applied. FIG. 2 is a waveform diagram showing a voltage applied between the electrodes by the electric discharge machining apparatus and the electric discharge machining method according to the first embodiment of the present invention.
【００１６】図３は図１の放電加工装置の電源部分の詳
細を示す回路図である。図において、４は放電加工用の
加工電源、６ａ，６ｂは直流電源、７ａ，７ｂはパワー
トランジスタ等のスイッチング素子、８ａ，８ｂは抵抗
器、９はスイッチング素子７ａ，７ｂのオン・オフ動作
を制御する制御回路である。FIG. 3 is a circuit diagram showing details of the power source portion of the electric discharge machine shown in FIG. In the figure, 4 is a machining power supply for electric discharge machining, 6a and 6b are direct current power supplies, 7a and 7b are switching elements such as power transistors, 8a and 8b are resistors, and 9 is on / off operation of the switching elements 7a and 7b. It is a control circuit for controlling.
【００１７】次に、この構成の放電加工装置の動作につ
いて説明する。放電加工電源４により放電パルスを発生
するが、この時、１パルス毎、或いは、何発かのパルス
毎に極性を切換える。こうして極性を交互に切換えるこ
とにより、切削加工が終った段階の金型１，２は同じよ
うに消耗する。特に、加工液３に混入した粉体は、電極
間（切削加工が終った段階の金型１，２間）の加工間隙
を拡大させ、通常不安定になり易いところの、鉄対鉄の
放電加工を安定にする働きがある。したがって、この放
電加工を利用することによって、切削加工によって金型
に付いていたカッターマークを除去することができる。Next, the operation of the electric discharge machine having this structure will be described. An electric discharge pulse is generated by the electric discharge machining power source 4, and at this time, the polarity is switched every one pulse or every several pulses. By alternately switching the polarities in this way, the molds 1 and 2 at the stage when the cutting process is finished are consumed in the same manner. In particular, the powder mixed in the machining liquid 3 expands the machining gap between the electrodes (between the molds 1 and 2 at the stage when the cutting process is finished), and the iron-to-iron discharge, which is apt to become unstable, usually occurs. It has the function of stabilizing the processing. Therefore, by utilizing this electric discharge machining, it is possible to remove the cutter mark attached to the mold by cutting.
【００１８】ここで、極性の切換動作について説明す
る。加工電源４は、加工に際して指定された電圧値、電
流値、休止時間等の加工条件に従って、切削加工が終っ
た段階の金型１，２に放電を発生させる。放電のタイミ
ングはスイッチング素子７ａ，７ｂの制御回路９によっ
て制御される。ここで、所定のパルス毎、或いは、ある
時間毎にスイッチング素子７ａ，７ｂのいずれかをオン
することにより放電の極性を切換えることができる。The polarity switching operation will be described below. The machining power source 4 generates an electric discharge in the dies 1 and 2 at the stage where the cutting process is completed according to the machining conditions such as the voltage value, the current value, and the dwell time designated during the machining. The discharge timing is controlled by the control circuit 9 of the switching elements 7a and 7b. Here, the polarity of the discharge can be switched by turning on either of the switching elements 7a and 7b every predetermined pulse or every certain time.
【００１９】この場合、切削加工が終った段階の金型１
を揺動させると、更にカッターマークの除去が容易にな
る。揺動半径は、カッターマークピッチの１／２程度が
有効である。また、加工液に粉末を混入すると、極間距
離を広くする働きがあり、揺動を行なう場合に切削加工
が終った段階の金型１，２のカッターマーク間の干渉を
防ぐことができる。In this case, the mold 1 at the stage when the cutting process is completed
Swinging makes it easier to remove the cutter mark. The swing radius is effectively about 1/2 of the cutter mark pitch. Further, if powder is mixed in the working liquid, it has a function of widening the distance between the electrodes, and it is possible to prevent interference between the cutter marks of the molds 1 and 2 at the stage when the cutting process is completed when rocking.
【００２０】このように、本実施例の放電加工装置は、
切削加工が終った段階の金型１，２（電極と被加工物
と）を加工液を介在させて対向させ、切削加工が終った
段階の金型１，２（電極と被加工物）間にパルス状の電
圧を印加して放電を発生せしめ、その放電エネルギーで
放電加工をする既に周知の放電加工手段と、前記切削加
工が終った段階の金型１，２（電極と被加工物）間の電
気的な極性を図２のように放電パルス１発毎、或いは、
それ以上のパルス群毎に極性を交互に切換える極性切換
手段と、前記加工液内に混入されたシリコン粉末等の粉
体とを備えている。As described above, the electric discharge machining apparatus of this embodiment is
Between the molds 1 and 2 (electrode and work piece) at the stage where the cutting work is finished, and the molds 1 and 2 (electrode and work piece) at the stage after the cutting work are made to face each other with a machining liquid interposed. A well-known electric discharge machining means for applying a pulsed voltage to the to generate an electric discharge and performing electric discharge machining with the electric discharge energy, and dies 1 and 2 (electrodes and workpieces) at the stage where the cutting is finished. The electrical polarity between the discharge pulses is as shown in FIG.
It further comprises polarity switching means for alternately switching the polarity for each pulse group, and powder such as silicon powder mixed in the working liquid.
【００２１】即ち、本実施例の放電加工装置は、切削加
工が終った段階の金型１，２（電極と被加工物と）を加
工液を介在させて対向させ、切削加工が終った段階の金
型１，２（電極と被加工物）間にパルス状の電圧を印加
して放電加工を行なうときに、前記切削加工が終った段
階の金型１，２（電極と被加工物）間の電気的な極性を
放電回数に応じて交互に切換え、前記加工液内に粉体が
混入されたものである。つまり、この放電加工装置で
は、放電加工の際に、前記切削加工が終った段階の金型
１，２（電極と被加工物）間の電気的な極性を放電回数
に応じて交互に切換え、前記加工液内に粉体を混入し、
前記切削加工が終った段階の金型１，２（電極及び被加
工物）に鉄を用いた放電加工方法が行なわれる。That is, in the electric discharge machining apparatus according to the present embodiment, the molds 1 and 2 (the electrode and the workpiece) at the stage after the cutting process are opposed to each other with the machining liquid interposed therebetween, and the stage at which the cutting process is completed. When a pulsed voltage is applied between the molds 1 and 2 (electrodes and the workpiece) to perform electric discharge machining, the molds 1 and 2 (electrodes and the workpiece) at the stage where the cutting is completed The electrical polarity between them is alternately switched according to the number of discharges, and powder is mixed in the working liquid. In other words, in this electric discharge machining apparatus, during electric discharge machining, the electric polarity between the molds 1 and 2 (electrode and workpiece) at the stage when the cutting is finished is switched alternately according to the number of discharges, Mixing powder into the processing liquid,
An electric discharge machining method using iron is performed on the molds 1 and 2 (electrodes and workpieces) at the stage where the cutting process is completed.
【００２２】したがって、本実施例の放電加工装置及び
放電加工方法においては、加工液内に粉体を混入するこ
とにより電極と被加工物間の加工間隙が拡大し、通常極
めて不安定になり易かった鉄対鉄の放電加工を安定して
行なうことができ、放電パルス１発毎、或いは、それ以
上のパルス群毎に極性を切換えることにより電極と被加
工物を同じ割合で加工でき、カッターマーク等を均一に
除去することができる。この結果、切削加工後の電極と
被加工物のカッターマークの除去作業が簡単化できる。Therefore, in the electric discharge machining apparatus and the electric discharge machining method of this embodiment, mixing the powder in the machining liquid increases the machining gap between the electrode and the workpiece, and is usually extremely unstable. It can perform stable iron-to-iron electrical discharge machining, and by changing the polarity for each discharge pulse or for each pulse group of more than that, the electrode and the workpiece can be machined at the same ratio. Etc. can be uniformly removed. As a result, it is possible to simplify the work of removing the electrode after cutting and the cutter mark of the workpiece.
【００２３】〈第二実施例〉図４は本発明の第二実施例
である放電加工装置及び放電加工方法を示す説明図であ
る。本実施例は、ダイスポッティングプレスの雄型・雌
型の修正方法を放電加工で置換えたものである。図中、
第一実施例と同一符号及び記号は第一実施例の構成部分
と同一または相当する構成部分を示す。<Second Embodiment> FIG. 4 is an explanatory view showing an electric discharge machining apparatus and an electric discharge machining method according to a second embodiment of the present invention. In this embodiment, the method for correcting the male / female die spotting press is replaced by electrical discharge machining. In the figure,
The same reference numerals and symbols as those in the first embodiment denote the same or corresponding components as those of the first embodiment.
【００２４】図において、１１は切削加工が終った段階
の雄型金型であり、１２は同じく切削加工が終った段階
の雌型金型である。これらの雄型・雌型の取付けは逆で
も構わない。切削加工が終った段階の雄型・雌型金型１
１，１２の間で上記第一実施例で述べたような放電加工
を行なうことにより、雄型・雌型の型合わせの修正を容
易に行なうことができる。したがって、金型製作におい
て従来のような複雑な修正作業を行なうことなく、雄型
・雌型がぴったりと密着する。この結果、雄型・雌型の
修正が簡単に失敗なくでき、金型製作時間が短縮化でき
る。In the figure, reference numeral 11 is a male die at the stage after the cutting work, and 12 is a female die at the stage after the cutting work. The male and female types may be attached in reverse. Male / female mold 1 at the stage of cutting
By performing the electric discharge machining as described in the first embodiment between 1 and 12, it is possible to easily correct the male / female mold matching. Therefore, the male mold and the female mold are in close contact with each other without performing a complicated correction work as in the conventional mold manufacturing. As a result, the male / female molds can be easily modified without failure, and the mold manufacturing time can be shortened.
【００２５】〈第三実施例〉図５は本発明の第三実施例
である金型製作方法の作業工程を示す説明図である。本
実施例は、ＣＡＤ／ＣＡＭによる金型のＮＣプログラム
（数値制御プログラム）の作成から金型の仕上げまでの
一連の作業工程を示している。図において、１３は金型
の一対の雄型・雌型データをＣＡＤ／ＣＡＭにより作成
するＣＡＤ／ＣＡＭ工程、１４は切削加工を行なうマシ
ニングセンタ工程、１５は放電加工工程である。１６は
ＣＡＤ／ＣＡＭによる加工データであり、ＣＡＤ／ＣＡ
Ｍにより作成された雄型の加工データである。１７は同
じくＣＡＤ／ＣＡＭによる加工データであり、同雌型の
加工データである。１８，１９はＣＡＤ／ＣＡＭによる
加工データ１６，１７によりマシニングセンタで切削加
工が終了した雄型・雌型である。２０，２１は上記第二
実施例の放電加工を利用して、切削加工が終了した雄型
１８・雌型１９のカッターマークの除去及び修正をした
ものである。<Third Embodiment> FIG. 5 is an explanatory view showing working steps of a mold manufacturing method according to a third embodiment of the present invention. The present embodiment shows a series of work steps from the creation of an NC program (numerical control program) for a die by CAD / CAM to the finishing of the die. In the figure, 13 is a CAD / CAM process for creating a pair of male / female mold data of a die by CAD / CAM, 14 is a machining center process for cutting, and 15 is an electric discharge machining process. Reference numeral 16 is processing data by CAD / CAM, which is CAD / CA.
It is the male type processing data created by M. Reference numeral 17 is similarly processed data by CAD / CAM and is processed data of the same female mold. Reference numerals 18 and 19 designate male and female dies whose cutting processing has been completed at the machining center based on the machining data 16 and 17 by CAD / CAM. Reference numerals 20 and 21 are obtained by removing and correcting the cutter marks of the male die 18 and the female die 19 after the cutting work by utilizing the electric discharge machining of the second embodiment.
【００２６】次に、この金型製作工程の流れを説明す
る。まず、ＣＡＤ／ＣＡＭシステムにより金型作成のた
めの加工データ即ちプログラムを作る（ＣＡＤ／ＣＡＭ
工程１３）。次に、加工データに基づきマシニングセン
タにより金型の雄型・雌型を切削加工により加工する
（マシニングセンタ工程１４）。次に、切削加工を終了
した金型を雄型・雌型を各々電極にし、上記第一実施例
及び第二実施例の放電加工を行なう（放電加工工程１
５）。この一連の作業により、雄型・雌型の修正まで含
めた金型製作が容易にできる。Next, the flow of the mold manufacturing process will be described. First, the CAD / CAM system is used to create machining data, that is, a program for making a die (CAD / CAM
Step 13). Next, the male / female dies of the die are machined by a machining center based on the machining data (machining center step 14). Next, the electric discharge machining of the above-mentioned first and second embodiments is performed by using the metal mold and the female mold as electrodes for the metal mold after the cutting work (the electric discharge machining step 1
5). Through this series of operations, it is possible to easily manufacture the mold including the modification of the male mold and the female mold.
【００２７】このように、本実施例の金型製作方法は、
金型の一対の雄型・雌型を切削加工するマシニングセン
タ工程１４（切削加工工程）と、切削加工が終了した雄
型・雌型１８，１９を粉体を混入した加工液を介在させ
て対向させ、前記切削加工が終了した雄型・雌型１８，
１９間にパルス状の電圧を印加して放電を発生せしめる
とともに、前記切削加工が終了した雄型・雌型１８，１
９間の電気的な極性を放電回数に応じて交互に切換え、
その放電エネルギーで前記切削加工が終了した雄型・雌
型１８，１９のカッターマークの除去及び雄型・雌型の
修正をする放電加工工程１５とを備えている。As described above, the mold manufacturing method of this embodiment is
Machining center process 14 (cutting process) for cutting a pair of male and female molds, and male and female molds 18 and 19 that have finished cutting face each other with a machining fluid containing powder intervening. And the male / female mold 18 for which the cutting process has been completed,
A pulse voltage is applied between 19 to generate an electric discharge, and the male / female dies 18, 1 after the cutting process are completed.
The electrical polarity between 9 is switched alternately according to the number of discharges,
And an electric discharge machining step 15 for removing the cutter marks of the male / female dies 18, 19 which have been cut by the electric discharge energy and correcting the male / female dies.
【００２８】即ち、本実施例の金型製作方法は、金型の
一対の雄型・雌型を切削加工し、切削加工後の雄型・雌
型を粉体を混入した加工液を介在させて対向させ、前記
雄型・雌型間にパルス状の電圧を印加して放電を発生せ
しめるとともに、前記雄型・雌型間の電気的な極性を放
電回数に応じて交互に切換え、その放電エネルギーで前
記雄型・雌型のカッターマークの除去及び修正をするも
のである。That is, in the mold manufacturing method of this embodiment, a pair of male and female molds is cut and the cut male and female molds are made to interpose a working fluid containing powder. To generate a discharge by applying a pulsed voltage between the male mold and the female mold, and alternately switch the electrical polarity between the male mold and the female mold according to the number of discharges. The energy is used to remove and correct the male and female cutter marks.
【００２９】したがって、切削加工後の雄型・雌型のカ
ッターマークの除去と、雄型・雌型の修正を放電加工を
利用して短時間でできる。Therefore, it is possible to remove the male and female cutter marks after cutting and correct the male and female dies in a short time by using electric discharge machining.
【００３０】特に、本実施例では、金型の一対の雄型・
雌型データをＣＡＤ／ＣＡＭにより作成するＣＡＤ／Ｃ
ＡＭ工程を有しているので、従来複雑であった雄型・雌
型の製作が一段と簡単にできる。この結果、金型の設計
から、雄型・雌型の修正までの一連の作業が容易にでき
るようになり、機械化の促進も図れる。Particularly, in this embodiment, a pair of male molds
CAD / C that creates female type data by CAD / CAM
Since it has an AM process, it is possible to manufacture male / female molds, which was complicated in the past, more easily. As a result, it becomes possible to easily perform a series of work from the design of the mold to the modification of the male / female mold, and the mechanization can be promoted.
【００３１】[0031]
【発明の効果】以上説明したように、請求項１の発明の
放電加工装置は、放電加工手段と、極性切換手段と、粉
体とを備え、電極と被加工物とを加工液を介在させて対
向させ、電極と被加工物間にパルス状の電圧を印加して
放電加工を行なうときに、前記電極と被加工物間の電気
的な極性を放電回数に応じて交互に切換え、前記加工液
内に粉体が混入されたことにより、電極と被加工物との
加工間隙が拡大し、不安定になり易かった放電加工を安
定して行なうことができ、しかも、電極と被加工物とを
同じ割合で加工でき、均一な加工ができるので、切削加
工後のカッターマークの除去や型の修正を簡単化でき
る。As described above, the electric discharge machining apparatus according to the invention of claim 1 is provided with the electric discharge machining means, the polarity switching means and the powder, and the machining fluid is interposed between the electrode and the workpiece. When the electric discharge machining is performed by applying a pulsed voltage between the electrode and the workpiece, the electric polarity between the electrode and the workpiece is alternately switched according to the number of discharges. Since the powder is mixed in the liquid, the machining gap between the electrode and the work piece expands, making it possible to perform stable electrical discharge machining, which was prone to instability. Can be machined at the same ratio and can be machined uniformly, so it is possible to remove the cutter marks and correct the mold after cutting.
【００３２】請求項２の発明の放電加工方法は、放電エ
ネルギーで被加工物を加工する放電加工において、電極
と被加工物間の電気的な極性を放電回数に応じて交互に
切換え、前記加工液内に粉体を混入し、前記電極及び被
加工物に鉄を用いることにより、電極と被加工物との加
工間隙が拡大し、通常極めて不安定になり易かった鉄対
鉄の放電加工を安定して行なうことができ、しかも、電
極と被加工物とを同じ割合で加工し、均一に加工するこ
とができるので、切削加工後のカッターマークの除去や
型の修正を簡単化できる。According to a second aspect of the electric discharge machining method of the present invention, the electric polarity between the electrode and the work piece is alternately switched according to the number of electric discharges in the electric discharge machining in which the work piece is machined with electric discharge energy. By mixing powder in the liquid and using iron for the electrode and the work piece, the machining gap between the electrode and the work piece expands, and iron-to-iron electrical discharge machining, which is usually easy to become unstable, is performed. Since it can be performed stably, and the electrode and the workpiece can be processed at the same ratio and can be processed uniformly, it is possible to easily remove the cutter mark and correct the mold after cutting.
【００３３】請求項３の発明の金型製作方法は、切削加
工工程と、放電加工工程とを備え、金型の一対の雄型・
雌型を切削加工し、切削加工後の雄型・雌型を粉体を混
入した加工液を介在させて対向させ、前記雄型・雌型間
にパルス状の電圧を印加して放電を発生せしめるととも
に、前記雄型・雌型間の電気的な極性を放電回数に応じ
て交互に切換え、その放電エネルギーで前記雄型・雌型
のカッターマークの除去及び雄型・雌型の修正をするこ
とにより、切削加工後の雄型・雌型のカッターマークの
除去と、雄型・雌型の修正を放電加工を利用して短時間
ででき、雄型・雌型の修正が簡単に失敗なくできるの
で、金型製作時間が短縮化される。According to a third aspect of the present invention, there is provided a die manufacturing method, which comprises a cutting process and an electric discharge machining process.
The female mold is cut, and the cut male and female molds are made to face each other with a machining fluid containing powder intervening, and a pulsed voltage is applied between the male and female molds to generate discharge. At the same time, the electrical polarity between the male and female molds is alternately switched according to the number of discharges, and the discharge energy removes the male and female cutter marks and corrects the male and female molds. As a result, removal of the male / female cutter marks after cutting and correction of the male / female can be done in a short time by using electrical discharge machining, and the male / female correction can be done easily and without failure. Therefore, the die manufacturing time can be shortened.
【００３４】請求項４の発明の金型製作方法は、ＣＡＤ
／ＣＡＭ工程と、切削加工工程と、放電加工工程とを備
え、金型の一対の雄型・雌型データをＣＡＤ／ＣＡＭに
より作成し、この雄型・雌型データに基づき金型の雄型
・雌型を切削加工し、切削加工後の雄型・雌型を粉体を
混入した加工液を介在させて対向させ、雄型・雌型間に
パルス状の電圧を印加して放電を発生せしめるととも
に、雄型・雌型間の電気的な極性を放電回数に応じて交
互に切換え、その放電エネルギーでカッターマークの除
去及び雄型・雌型の修正をすることにより、従来複雑で
あった雄型・雌型の金型の製作が簡単にできるので、金
型の設計から、雄型・雌型の修正までの一連の作業が容
易にできる。The die manufacturing method according to the invention of claim 4 is CAD
/ CAM process, cutting process, and electric discharge machining process. A pair of male / female mold data of the mold is created by CAD / CAM, and the male mold of the mold is based on this male / female data.・ Cutting the female die, and facing the male / female die after cutting with a machining fluid containing powder, and applying a pulsed voltage between the male / female die to generate electric discharge. In addition to this, the electrical polarity between the male and female molds was alternately switched according to the number of discharges, and the discharge energy used to remove the cutter marks and correct the male and female molds, which was conventionally complicated. Since male / female molds can be easily manufactured, a series of operations from designing the mold to modifying the male / female molds can be easily performed.
【図１】図１は本発明の第一実施例である放電加工装置
及び放電加工方法を示す説明図である。FIG. 1 is an explanatory diagram showing an electric discharge machining apparatus and an electric discharge machining method according to a first embodiment of the present invention.
【図２】図２は本発明の第一実施例である放電加工装置
及び放電加工方法による極間に印加する電圧を示す波形
図である。FIG. 2 is a waveform diagram showing a voltage applied between the electrodes by the electric discharge machining apparatus and the electric discharge machining method according to the first embodiment of the present invention.
【図３】図３は図１の放電加工装置の電源部分の詳細を
示す回路図である。FIG. 3 is a circuit diagram showing details of a power source portion of the electric discharge machine shown in FIG.
【図４】図４は本発明の第二実施例である放電加工装置
及び放電加工方法を示す説明図である。FIG. 4 is an explanatory diagram showing an electric discharge machining apparatus and an electric discharge machining method according to a second embodiment of the present invention.
【図５】図５は本発明の第三実施例である金型製作方法
の作業工程を示す説明図である。FIG. 5 is an explanatory view showing working steps of a mold manufacturing method according to a third embodiment of the present invention.
【図６】図６は従来の金型製作方法の作業工程を示す説
明図である。FIG. 6 is an explanatory view showing working steps of a conventional die manufacturing method.
１ 切削加工が終った段階の金型 ２ 切削加工が終った段階の金型 ３ 加工液 ４ 加工電源 ５ 加工槽 ６ａ，６ｂ 直流電源 ７ａ，７ｂ スイッチング素子 ８ａ，８ｂ 抵抗器 ９ スイッチング素子の制御回路 １１ 切削加工が終った段階の雄型金型 １２ 切削加工が終った段階の雌型金型 １３ ＣＡＤ／ＣＡＭ工程 １４ マシニングセンタ工程 １５ 放電加工工程 １６ ＣＡＤ／ＣＡＭによる加工データ １７ ＣＡＤ／ＣＡＭによる加工データ １８ 切削加工が終了した雄型 １９ 切削加工が終了した雌型 ２０ 放電加工により修正した雄型 ２１ 放電加工により修正した雌型 1 Mold at the stage after cutting process 2 Mold at the stage after cutting process 3 Working fluid 4 Processing power source 5 Processing tank 6a, 6b DC power source 7a, 7b Switching element 8a, 8b Resistor 9 Control circuit for switching element 11 Male mold at the stage where cutting is finished 12 Female mold at the stage where cutting is finished 13 CAD / CAM process 14 Machining center process 15 Electric discharge machining process 16 CAD / CAM machining data 17 CAD / CAM machining data 18 Male dies after cutting 19 Female dies after cutting 20 Male modified by electrical discharge machining 21 Female modified by electrical discharge machining
【手続補正書】[Procedure amendment]
【提出日】平成５年９月２１日[Submission date] September 21, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図３[Name of item to be corrected] Figure 3
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図３】 [Figure 3]
───────────────────────────────────────────────────── フロントページの続き (72)発明者 後藤 昭弘 愛知県名古屋市東区矢田南五丁目１番14号 三菱電機株式会社名古屋製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiro Goto 5-1-14, Minami Yada, Higashi-ku, Nagoya-shi, Aichi Mitsubishi Electric Corporation Nagoya Works
Claims (4)
対向させ、電極と被加工物間にパルス状の電圧を印加し
て放電を発生せしめ、その放電エネルギーで放電加工を
する放電加工手段と、 前記電極と被加工物間の電気的な極性を放電回数に応じ
て交互に切換える極性切換手段と、 前記加工液内に混入された粉体とを具備することを特徴
とする放電加工装置。1. An electric discharge in which an electrode and a workpiece are opposed to each other with a machining liquid interposed therebetween, a pulsed voltage is applied between the electrode and the workpiece to generate an electric discharge, and electric discharge machining is performed by the discharge energy. An electric discharge comprising: a machining means, a polarity switching means for alternately switching the electric polarity between the electrode and the workpiece according to the number of discharges, and a powder mixed in the machining liquid. Processing equipment.
対向させ、電極と被加工物間にパルス状の電圧を印加し
て放電を発生せしめ、その放電エネルギーで被加工物を
加工する放電加工において、 前記電極と被加工物間の電気的な極性を放電回数に応じ
て交互に切換え、前記加工液内に粉体を混入し、前記電
極及び被加工物に鉄を用いることを特徴とする放電加工
方法。2. An electrode and a work piece are opposed to each other with a working fluid interposed therebetween, a pulsed voltage is applied between the electrode and the work piece to generate an electric discharge, and the work piece is processed with the discharge energy. In the electric discharge machining, the electric polarity between the electrode and the workpiece is alternately switched according to the number of discharges, powder is mixed in the machining liquid, and iron is used for the electrode and the workpiece. Characteristic electrical discharge machining method.
切削加工工程と、 前記切削加工後の雄型・雌型を粉体を混入した加工液を
介在させて対向させ、前記雄型・雌型間にパルス状の電
圧を印加して放電を発生せしめるとともに、前記雄型・
雌型間の電気的な極性を放電回数に応じて交互に切換
え、その放電エネルギーで前記雄型・雌型のカッターマ
ークの除去及び雄型・雌型の修正をする放電加工工程と
を具備することを特徴とする金型製作方法。3. A cutting process for cutting a pair of male and female dies of a mold, and a male and female dies after the cutting are opposed to each other with a machining fluid containing powder intervening therebetween. A pulsed voltage is applied between the male mold and the female mold to generate discharge, and the male mold
And an electrical discharge machining step of alternately switching the electrical polarity between the female dies according to the number of discharges, and removing the male and female cutter marks and correcting the male and female dies with the discharge energy. A mold manufacturing method characterized by the above.
／ＣＡＭにより作成するＣＡＤ／ＣＡＭ工程と、 前記雄型・雌型データに基づき金型の雄型・雌型を切削
加工する切削加工工程と、 前記切削加工後の雄型・雌型を粉体を混入した加工液を
介在させて対向させ、雄型・雌型間にパルス状の電圧を
印加して放電を発生せしめるとともに、雄型・雌型間の
電気的な極性を放電回数に応じて交互に切換え、その放
電エネルギーでカッターマークの除去及び雄型・雌型の
修正をする放電加工工程とを具備することを特徴とする
金型製作方法。4. CAD of a pair of male and female mold data
CAD / CAM process created by / CAM, a cutting process for cutting the male / female mold of the mold based on the male / female mold data, and a powdered male / female mold after the cutting process. A machining fluid mixed with is placed in opposition so that a pulsed voltage is applied between the male and female dies to generate an electrical discharge, and the electrical polarity between the male and female dies is changed according to the number of discharges. A method of manufacturing a die, comprising: an electric discharge machining step of alternately switching and removing a cutter mark and correcting a male die and a female die with the electric discharge energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30085492A JPH06155171A (en) | 1992-11-11 | 1992-11-11 | Electric discharge machine, electric discharge machining method and metal mold manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30085492A JPH06155171A (en) | 1992-11-11 | 1992-11-11 | Electric discharge machine, electric discharge machining method and metal mold manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06155171A true JPH06155171A (en) | 1994-06-03 |
Family
ID=17889927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30085492A Pending JPH06155171A (en) | 1992-11-11 | 1992-11-11 | Electric discharge machine, electric discharge machining method and metal mold manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06155171A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010086468A (en) * | 2008-10-02 | 2010-04-15 | Makino Milling Mach Co Ltd | Working system |
| JP2012183610A (en) * | 2011-03-07 | 2012-09-27 | Fanuc Ltd | Electric discharge machining device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5118397A (en) * | 1974-08-03 | 1976-02-13 | Taoka Seisakusho Kk | TSUDENKAKOHO |
| JPH04101722A (en) * | 1990-08-14 | 1992-04-03 | Sodick Co Ltd | Electric discharge machining device |
| JPH04294455A (en) * | 1991-03-22 | 1992-10-19 | Fujitsu Kiden Ltd | Cad plan view inspecting system |
-
1992
- 1992-11-11 JP JP30085492A patent/JPH06155171A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5118397A (en) * | 1974-08-03 | 1976-02-13 | Taoka Seisakusho Kk | TSUDENKAKOHO |
| JPH04101722A (en) * | 1990-08-14 | 1992-04-03 | Sodick Co Ltd | Electric discharge machining device |
| JPH04294455A (en) * | 1991-03-22 | 1992-10-19 | Fujitsu Kiden Ltd | Cad plan view inspecting system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010086468A (en) * | 2008-10-02 | 2010-04-15 | Makino Milling Mach Co Ltd | Working system |
| JP2012183610A (en) * | 2011-03-07 | 2012-09-27 | Fanuc Ltd | Electric discharge machining device |
| US8901448B2 (en) | 2011-03-07 | 2014-12-02 | Fanuc Corporation | Electric discharge machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH06155171A (en) | Electric discharge machine, electric discharge machining method and metal mold manufacturing method | |
| EP2237914B1 (en) | Method for machining a metal component | |
| US3467593A (en) | Electrochemical deburring under pressure | |
| US5038011A (en) | Wire cut electric discharge machining method | |
| JPH03245918A (en) | Wire electric discharge machining | |
| JPH0811017A (en) | Method and device for preparing data to manufacture electrode for and data to control electric discharge machine | |
| SU774891A1 (en) | Method of spark-erosion making of cutting-out dies | |
| JP2002254247A (en) | High efficient hole forming method by diesinking micro electrical discharge machining | |
| JPH03136725A (en) | Method of setting process condition of electric discharge machining device | |
| JPH03117519A (en) | Wire electric discharge machining | |
| JPH0230431A (en) | Power unit for discharge processing | |
| JPS61146419A (en) | Electric discharge machine | |
| JPH04176516A (en) | Second cut machining method and second cut machining controller in wire electric discharge machining | |
| JPH0433568B2 (en) | ||
| SU1060383A1 (en) | Method of electroerosion producing of working elements of punching dies | |
| JP2912416B2 (en) | Wire electric discharge machining method | |
| KR100432098B1 (en) | Super drill setting method for 0.1pi punching structure | |
| JPH06297055A (en) | Production of press die | |
| JPS58168483A (en) | Joining method of mounting seat | |
| SU1657301A1 (en) | Method for dimensional electrochemical treatment of holes in sheet articles | |
| JPH0596419A (en) | Control of powder mixed electric discharge machining | |
| JPH0379229A (en) | Automatic multiple-machining method for nc wire electric discharge machine | |
| JPH1049212A (en) | Method and device for controlling machine tool | |
| JPH06335825A (en) | Electrolytic working method for metal surface | |
| JPH04152022A (en) | Manufacture of discharge machining electrode |